and many more benefits!

Find us on Facebook

GMAT Club Timer Informer

Hi GMATClubber!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Show Tags

19 Jul 2012, 04:14

The table on the left is the compelete timeline-chart.The scale is too small to show in details the Pharenozoic Eon hence the one in the middle is a zoom on the Pharenozoic.Again too small to see in details the Cenozoic, so the chart on the right is another zoon on that Era.

Show Tags

As is always the case with Graphics problems, we should read the text to help understand this image. Some questions can be answered without referencing the passage, but it's always easier to read first. And in this case, a single word--"magnification"--helps us understand the image. Those gray triangles marked off by dotted lines are telling us which part of the bar on the left is magnified by the bars moving right.

So, for the first question, the Miocene Epoch isn't in the same bar of the graph as any of the Eras. But looking at the magnification indicators, we can see that the entire rightmost graphic is expanded from the Cenozoic era. So, since the Miocene takes up about 25% of it's bar, it takes up about 25% of the Cenozoic Era of which it is part.

As for the second question, it asks for something about eons, eras, and periods--that puts us in graph 2. We're asking for the beginning of all three, which means we want a line straight across the graph. That's the Cambrian period, which starts the Phanerozoic Eon and the Paleozoic Era.